JPS58189523A - Display of electronic balance - Google Patents

Abstract

PURPOSE:To obtain a display of an electronic balance efficient and easy to use, by providing in juxtaposition a digital display apparatus of weighing with an analogue display apparatus corresponding to a figure of a part of this display quantity. CONSTITUTION:In case of weighing only 2350.0g of a liquid, a figure of an analogue display is set at two figures from the lowest figure. When the sample liquid is poured at the speed of about 500g in every one second at first, reading is made possible because the highest figure of a digital display 4 is increased by every one figure in about tow seconds. When its number is displayed as 2, the pouring velocity is decreased to about 100g per second and when the numeral of the second figure from the highest figure is displayed, the pouring velocity is decreased to about 10g per second. Because the reading of the numeral of the fourth figure is made impossible when the numeral of the third figure from the highest figure is dispayed, attension is given to an analogue display 5 when the numeral 4 of the third figure is dispalyed and the pouring speed is decreased when it is displayed about a half of it. Then, the digital display becomes to show 2350.0g when it is stopped exactly at a full scale. Hereby, the display apparatus having good efficiency and easy to use, is obtained.

Description

[Detailed description of the invention] The present invention relates to a display device related to a weighing value of an electronic scale.

Conventionally, in electronic scales where the receiver detects the weight of a sample placed on a plate using a load-air exchange device 1 and displays the weighed value, in order to eliminate reading errors in the weighed value, In most cases, the display was done digitally. Although this digital display is convenient for measuring unknown weights, for example, when measuring a fixed amount of liquid, etc., the receiver measures a fixed amount while gradually increasing the amount of sample on the plate. Therefore, it is necessary to read the displayed value while it is changing, and it is very difficult to read the value that is changing, making it difficult to use for such tasks. It goes without saying that analog display is more reliable in order to grasp the approximate value of the displayed value during these various changes. Conventionally, there are already display devices for single electronic scales that have a digital display and an analog display in parallel, or they have 10 to 20 display elements arranged to correspond to the total weight value. , the resolution is insufficient to provide a rough understanding of the values in the above-mentioned work, and it is not suitable for practical use.
It was of little use and had only a guideline or design function.

The present invention has been made in view of the above, and by displaying the weighing value digitally and only some of the digits of the digital display in an analog manner, it is possible to improve efficiency even in operations such as the above-mentioned weighing of a fixed amount. The purpose is to provide a display device for electronic scales that is easy to use.

The present invention will be described in detail below based on one drawing.

Figure 1 is an external perspective view of an electronic balance incorporating an embodiment of the present invention, and Figure 2 is a front view of its analog display section.

A weight display section 2 for displaying the amount of sample Wl in the tray 11 is provided on the front of the case 3, and a digital display section [4] for displaying the weighed value in numbers and some digits of the digital display device. An analog display device 15 is arranged to display the numerical values in an analog manner.

The analog display section *15 is composed of a set of 100 display elements 6...6 in multiple rows, and is arranged from the lower left to the upper right in FIG. 2 according to the numerical value of the corresponding digital display digit. Each display element 6...6 changes continuously, and the display body of the bar 1 is constituted as a whole. As the display element 6, a light emitting diode, a liquid crystal display element, a fluorescent display tube, or other display element can be used. This analog display device 111
Any two digits of the digital display device 4 corresponding to 5 are selected by the analog display digit selection key 7, and the third @
As shown in the vicinity of the digital display device [4], a display body 8 is provided to indicate the digit in the selected analog display. Further, by using the analog display digit selection key 7, the digits of the digital display to be analog displayed can be set to an automatic switching mode. That is, in the automatic switching mode, the analog display digit corresponding to the rate of change of the detected weight is determined in advance, and by monitoring this ashing rate, the optimum digit is automatically displayed in analog.

The weight display section 2 is provided with an automatic one mode display 9 as shown in FIG. 183.

Next, the operation of measuring a fixed amount of liquid according to the above-described embodiment of the present invention will be described in comparison with the conventional case where only digital display is used.

For example, assume that 2350.0 g of liquid is weighed. First, the digits of the analog display according to the embodiment of the present invention are set to two digits from the lowest digit. Then, add the sample liquid to
When injecting at a rate of about 500g per second, the number on the top digit of the digital display device 4 increases by cl for about 2 seconds, so it is easily readable, and the number on the top digit changes to 2. As soon as this happens, reduce the injection rate to about 100 g/sec. Then, the second digit from the last digit is approximately 1
It increases by 1 per second, so as soon as 3 is reached, the injection speed is reduced to about 10 g per second. At this time, the third digit from the ah digit increases by 1 per second, so whether it can be read sufficiently, the fourth digit is 0.1 seconds and the fifth digit is 0.
．． It increases by 1 every second, making it virtually impossible to read, but when the third digit from the top reaches 4, pay attention to the analog display fIL5 and see that the analog display is about half full. When this point is displayed, the injection rate is slowed down and controlled to stop at just the full scale (100), resulting in 2350.0 g.

Changes in the injection rate can be controlled relatively easily because of the analog display, and the final value is confirmed on the digital display and the weighing operation is completed. In this case, the time required for peeling off is approximately 16 seconds.

By the way, when performing the same task using a conventional device that displays only a digital display, it is exactly the same from the lowest digit until the third digit shows a 4, and in order to read the fourth digit, The injection rate must be reduced to about 1 g per second, and to about 0.1 g per second in the fifth digit, and the time required for stripping in this case is about 29 seconds.

Note that the digits on the digital display that correspond to the analog display are
It may be fixed to two digits from the lowest digit. but,
If the configuration is configured so that any two digits can be selected as in the above embodiment, for example, when measuring a fixed amount, it is possible to accurately determine the excess or deficiency of the fixed amount. In the stripping work, for example, if the third and fourth digits from the lowest digit are displayed in correspondence with the analog display, the work can be completed more quickly.

In addition, the digits on the digital display that correspond to the analog display are
As in the usage example above, the rate of change is often extremely fast, which can be bothersome, so monitor the rate of change,
It may be configured to operate only when the speed is below a predetermined speed and stop operating in other cases.

To explain the operation when performing the above-mentioned weighing operation using the analog display digit automatic switching mode of the embodiment of the present invention, when injecting 500 g/s, the second and third digit from the lowest digit
The digit is displayed in analog form, and when injecting 100 g per second, the 1st, 3rd, and 4th digits are displayed in analog form, and lo every second.
When injecting g, the fourth and fifth digits from the lowest digit are displayed in analog form. In this case, since the analog display can be referred to from the beginning of injection, the work can be carried out more efficiently.

An example of a circuit configuration diagram of an embodiment of the present invention is shown in FIG. This example is an example of a circuit using a microcomputer, and the central controller 1111 includes a load-to-electrical converter 112 that detects the weight of the sample on the plate, and a read-only memory that stores needle-side programs, etc. 13, a random access memory 14 for storing measurement values and other data, and operation keys 15 are connected to the programmable peripheral.
Various signals are sent to the digital display device 4 via the interface 16 and further to the analog display device 5 via the decoder 17.

Furthermore, if a plurality of display elements are arranged in an endless manner as shown in the front view in Fig. 5, an analog display will appear at 1'' of the numerical value of the next higher digit of the corresponding digit of the digital display. Since it corresponds to 1 Jil, it can be made even easier to use.

As explained above, the present invention is equipped with a digital display device that displays the weighing value and an analog display device that only corresponds to some of the digits of the digital display device, so it is possible to To obtain an electronic scale that can quickly carry out weighing work of a certain amount while giving an estimate using an analog display, and can read the final weighed value accurately and without fail using a digital display. Additionally, when measuring an unknown weight, it can be read using a conventional digital display.

[Brief explanation of the drawing]

Fig. 1 is an external perspective view of an embodiment of the present invention, Fig. 2 is a front view of its analog display device, Fig. 183 is a front view of the digital display near the koji making, and Fig. 4 is a circuit configuration diagram of the embodiment of the present invention. , FIG. 5 is a front view of a display unit according to another embodiment of the present invention. 4...Digital display device 5...Analog display device 6...Display element 7...Analog display digit selection key 11...Central control unit...Load-at-once conversion device 16...Interface 17-... Decoder patent applicant Shimadzu Corporation Patent Attorney Nishi 1) New A/A//l/, a, Dil Figure 6

Claims (1)

[Claims] (1) The receiver includes a multi-digit digital display device that displays the weighed value of the koji sample placed on the plate, and a part of the multi-digit digital display device other than the first digit. A display device for an electronic scale comprising a plurality of continuously arranged display elements that correspond to digits and display numerical values in an analog manner. (2+) The electronic scale according to claim 11!1, characterized in that the plurality of display elements are linearly arranged in at least one row, and the whole constitutes a willow analog display body. Display device. (3) A display device for an electronic scale according to claim 1, characterized in that the plurality of display elements described above are arranged in an endless manner. (4) An analog display device using the plurality of display elements described above. The display device for an electronic scale according to claim 181, 182, or 3, wherein the digit of the digital display device corresponding to the digit display is at least one digit from the lowest digit. (5) The digit of the digital display device to which the analog display by the plurality of display elements corresponds is at least one digit, which can be arbitrarily selected. Paragraph 2 is the display device of the electronic scale described in Paragraph 3. (Button) The digit of the digital display device corresponding to the analog display by the plurality of display elements is automatically changed according to the rate of change in the detected weight. Claim l181, @2] IJ
t or the display device for an electronic scale according to item 3. (7) 1. The digital display device corresponding to the analog display by the plurality of display elements is configured to operate only when the numerical value of the digit is less than or equal to a predetermined rate of change. Range 1st term. A display device for an electronic scale according to item 2, 3, 4, 5, or 6.